The top portion of MEM2 (the second 64MB memory block) in the Nintendo
Wii video game console is used by the firmware running on the Starlet
processor.

Add code to calculate the portion of MEM2 safely useable by the
Broadway processor. When running under the 'mini' firmware this is
easily determined from an in-memory header. Otherwise, a safe default
is used.
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Add support for using the USB Gecko adapter as an early debugging
console on the Nintendo GameCube and Wii video game consoles.
The USB Gecko is a 3rd party memory card interface adapter that provides
a EXI (External Interface) to USB serial converter.
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Add a set of entries to the fixmap table to allow usage of known
reserved virtual address space by early debug code.

The address space reserved is the top 128K of the 32-bit address
space. This allows, if required, the use of a BAT to do the mappings.
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Add a default configuration for the Nintendo Wii video game console.
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Add platform support for the Nintendo Wii video game console.
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: NSegher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Add support for the dual interrupt controller included in the "Hollywood"
chipset of the Nintendo Wii video game console.
This interrupt controller serves both the Broadway processor (as a cascade)
and the Starlet processor, and is used to manage interrupts for the
non-classic hardware.
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Acked-by: NSegher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

This patch extends the cputable entry of the 750CL to also match
the 750CL-based "Broadway" cpu found on the Nintendo Wii.

As of this patch, the following "Broadway" design revision levels have
been seen in the wild:
- DD1.2 (87102)
- DD2.0 (87200)
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Add support for the Nintendo Wii video game console to the powerpc
bootwrapper.

dtbImage.wii is a wrapped image that contains a flat device tree,
an entry point compatible with the Homebrew Channel and BootMii,
and an optional initrd.
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Acked-by: NSegher Boessenkool <segher@kernel.crashing.org>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Add a device tree source file for the Nintendo Wii video game console.
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Acked-by: NSegher Boessenkool <segher@kernel.crashing.org>
Acked-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Add a default configuration for the Nintendo GameCube video game console.
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Add platform support for the Nintendo GameCube video game console.
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Add support for the interrupt controller included in the "Flipper"
chipset of the Nintendo GameCube video game console.
The same interrupt controller is also present in the "Hollywood" chipset
of the Nintendo Wii.
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Acked-by: NSegher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Add support for using the USB Gecko adapter via the udbg facility on
the Nintendo GameCube and Wii video game consoles.
The USB Gecko is a 3rd party memory card interface adapter that provides
a EXI (External Interface) to USB serial converter.
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Acked-by: NSegher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

The Nintendo GameCube and Wii video game consoles do not have PCI hardware.
Avoid wasting their scarce memory by not including PCI support into the
kernel.
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

The processors bundled in the Nintendo GameCube and Wii video game consoles
require explicit cache handling when DMA engines are used.
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Add a config option GAMECUBE_COMMON to be used as a dependency for all
options common to the Nintendo GameCube and Wii video game consoles.
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Acked-by: NGrant Likely <grant.likely@secretlab.ca>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Add support for the Nintendo GameCube video game console to the powerpc
bootwrapper.

dtbImage.gamecube is a wrapped image that contains a flat device tree,
an entry point compatible with SDload, and an optional initrd.
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Acked-by: NSegher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Add a device tree source file for the Nintendo GameCube video game console.
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Acked-by: NSegher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

Add support for using the USB Gecko adapter as a bootwrapper console on
the Nintendo GameCube and Wii video game consoles.
The USB Gecko is a 3rd party memory card interface adapter that provides
a EXI (External Interface) to USB serial converter.
Signed-off-by: NAlbert Herranz <albert_herranz@yahoo.es>
Acked-by: NSegher Boessenkool <segher@kernel.crashing.org>
Signed-off-by: NGrant Likely <grant.likely@secretlab.ca>

We should now use dev_set_drvdata to set the driver driver_data field.
Signed-off-by: NFlorian Fainelli <florian@openwrt.org>
Patchwork: http://patchwork.linux-mips.org/patch/747/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Broken by d63c63e889bbeeaa461a8addf1245f89f3ce4ece (lmo) rsp.
f1e39a4a (kernel.org).
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/746/

With flatmem hibernation for Loongson will fail, and there are also some
other problems such as broken files when using NFS or CIFS / Samba.

The config help of sparsemem says:

"This option provides some potential performance benefits, along with
decreased code complexity."

So to avoid the potential problems of FLATMEM, we disable FLATMEM directly
and use SPARSEMEM instead.

Related email thread:

http://groups.google.com/group/loongson-dev/browse_thread/thread/b6b65890ec2b0f24/feb43e5aa7f55d9b?show_docid=feb43e5aa7f55d9bReported-by: NTatu Kilappa <tatu.kilappa@gmail.com>
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/737/
Cc: linux-mips@linux-mips.org
Cc: zhangfx@lemote.com
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Currently, with PAGE_SIZE_4KB, the kernel for loongson will hang on:

Kernel panic - not syncing: Attempted to kill init!

The possible reason is the cache aliases problem:

Loongson 2F has 64kb, 4 way L1 Cache, the way size is 16kb, which is bigger
then 4kb. so, If using 4kb page size, there is cache aliases problem.
To avoid this kind of problem, extra cache flushing.  The 2nd possible
solution is 16kb page size which avoids cache aliases without the need for
extra cache flushes.  So we disable 4kB pages until the aliasing issue is
solved.
Signed-off-by: NWu Zhangjin <wuzhangjin@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/736/
Cc: linux-mips@linux-mips.org
Cc: zhangfx@lemote.com
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

Thanks to Joseph S. Myers for reporting this.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
Cc: "Joseph S. Myers" <joseph@codesourcery.com>
Patchwork: http://patchwork.linux-mips.org/patch/723/

If __xchg() is not getting inlined the outline version of the function
will have a reference to __xchg_called_with_bad_pointer() which does not
exist remaining.  Fixed by using BUILD_BUG_ON() to check for allowable
operand sizes.
Signed-off-by: NRalf Baechle <ralf@linux-mips.org>
Patchwork: http://patchwork.linux-mips.org/patch/705/

Some Debian users have reported that the kernel hangs early during boot on
some IP22 systems.  Thomas Bogendoerfer found that this is due to a "bad
interaction between CONFIG_EARLY_PRINTK and overwritten prom memory during
early boot".  Since there's no fix yet, disable CONFIG_EARLY_PRINTK for now.
Signed-off-by: NMartin Michlmayr <tbm@cyrius.com>
Cc: linux-mips@linux-mips.org
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Dmitri Vorobiev <dmitri.vorobiev@gmail.com>
Patchwork: http://patchwork.linux-mips.org/patch/702/Signed-off-by: NRalf Baechle <ralf@linux-mips.org>

The typename member of struct irq_chip was kept for migration purposes
and is obsolete since more than 2 years. Fix up the leftovers.
Signed-off-by: NThomas Gleixner <tglx@linutronix.de>
Cc: Richard Henderson <rth@twiddle.net>
Cc: linux-alpha@vger.kernel.org
Signed-off-by: NMatt Turner <mattst88@gmail.com>

The removal of the TIF_NOTIFY_RESUME flag, commit a583f1b5
"remove unused TIF_NOTIFY_RESUME flag," resulted in incorrect
setting of the unaligned access control flags by the prctl syscall.

The re-addition of the TIF_NOTIFY_RESUME flag, commit d0420c83
"KEYS: Extend TIF_NOTIFY_RESUME to (almost) all architectures [try #6]"
further caused problems, namely incorrect operands to assembler code
as evidenced by:

AS      arch/alpha/kernel/entry.o
arch/alpha/kernel/entry.S: Assembler messages:
arch/alpha/kernel/entry.S:326: Warning: operand out of range
(0x0000000000000406 is not between 0x0000000000000000 and
0x00000000000000ff)

Both regressions fixed by (1) rearranging TIF_NOTIFY_RESUME flag to be
in lower 8 bits of the thread info flags, and (2) making sure that
ALPHA_UAC_SHIFT matches the rearrangement of the thread info flags.
Signed-off-by: NMichael Cree <mcree@orcon.net.nz>
Cc: Richard Henderson <rth@twiddle.net>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: David Howells <dhowells@redhat.com>,
Signed-off-by: NMatt Turner <mattst88@gmail.com>

Code was added to mm/higmem.c that depends on several
kmap types that powerpc does not support.  We add dummy
invalid definitions for KM_NMI, KM_NM_PTE, and KM_IRQ_PTE.

According to list discussion, this fix should not be needed
anymore starting with 2.6.33.  The code is commented to this
effect so hopefully we will remember to remove this.
Signed-off-by: NBecky Bruce <beckyb@kernel.crashing.org>
Signed-off-by: NBenjamin Herrenschmidt <benh@kernel.crashing.org>

Check that the result of kmalloc is not NULL before passing it to other
functions.

The semantic match that finds this problem is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@@
expression *x;
identifier f;
constant char *C;
@@

x = \(kmalloc\|kcalloc\|kzalloc\)(...);
... when != x == NULL
    when != x != NULL
    when != (x || ...)
(
kfree(x)
f(...,C,...,x,...)
|
*f(...,x,...)
|
*x->f
)
// </smpl>
Signed-off-by: NJulia Lawall <julia@diku.dk>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: NMatt Turner <mattst88@gmail.com>

The kernel.h macro DIV_ROUND_CLOSEST performs the computation (x + d/2)/d
but is perhaps more readable.

The semantic patch that makes this change is as follows:
(http://www.emn.fr/x-info/coccinelle/)

// <smpl>
@haskernel@
@@

@depends on haskernel@
expression x,__divisor;
@@

- (((x) + ((__divisor) / 2)) / (__divisor))
+ DIV_ROUND_CLOSEST(x,__divisor)
// </smpl>
Signed-off-by: NJulia Lawall <julia@diku.dk>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Richard Henderson <rth@twiddle.net>
Signed-off-by: NMatt Turner <mattst88@gmail.com>

kernel unwinding is broken with gcc >= 4.x.  Part of the problem is that
binutils seems very sensitive to where the unwind information is stored.
Signed-off-by: NHelge Deller <deller@gmx.de>
Signed-off-by: NKyle McMartin <kyle@mcmartin.ca>
Signed-off-by: NLinus Torvalds <torvalds@linux-foundation.org>

Signed-off-by: NRussell King <rmk+kernel@arm.linux.org.uk>

Commit d5ce528c (Blackfin: convert irq/process to asm-generic)
incorrectly merged the smp and non-smp cases of start_thread() causing the
L1 stack to be setup on the SMP port instead of the UP port.
Signed-off-by: NGraf Yang <graf.yang@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

To set zeroes the sizeof the struct should be used rather
than sizeof the pointer, kzalloc does that.
Signed-off-by: NRoel Kluin <roel.kluin@gmail.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Commit c014e15a (Blackfin: convert ptrace to new memory functions)
introduced a copy & paste typo in the ptrace poke data/text handling.  The
access_process_vm() function call was telling it to read instead of write.
Signed-off-by: NJie Zhang <jie.zhang@analog.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Parts that have on-chip L2 SRAM cannot safely utilize writeback caching
mode, so reject any attempts to use it.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Ironically, the atomic testset instruction cannot be interrupted else it
will produce incorrect results.  So disable interrupts to help it out.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

Add some recently documented anomalies (473, 474, 475, 477).  Also stick
a "do not edit" notice in here so people know these are copies of some
master version.
Signed-off-by: NMike Frysinger <vapier@gentoo.org>

The Kconfig option is "BFIN_EXTMEM_WRITETHROUGH", not "..._WRITETROUGH".
Signed-off-by: NAndré Goddard Rosa <andre.goddard@gmail.com>
Signed-off-by: NMike Frysinger <vapier@gentoo.org>